New traffic lights will be installed on one of the Kapiti district's busiest roads leading to a new aquatic centre.

Kapiti Coast District Council infrastructure services group manager Sean Mallon said work on laying trenches for new traffic lights on Kapiti Rd where it intersects with Larch Grove and an access road to Coastlands Aquatic Centre, presently under construction, started last week and will be completed by early March.

Kapiti Rd carries up to 25,000 vehicles a day, more than State Highway 1 at the Kapiti Rd intersection.

Mr Mallon said the new traffic lights will ensure people can get safety to the new aquatic centre, due to open at the end of March.

The lights will be configured to give priority to drivers on Kapiti Rd, he said, rather than side roads joining it. They will also be linked to the traffic lights at the Rimu Rd intersection to ensure traffic is kept moving along Kapiti Rd.